kinsman



(No Model.) 2 Sheets-Sheet 1.

F. E. KINSMAN. ELEGTRIG ARC- LAMP.

No. 411,287. Patented Sept. 17, 1889.

ywq l/ WITNESSES: INVE 70/2 (No Model.) 2 Sheets-Sheet 2. F. E. KINSMAN.

ELECTRIC ARC LAMP. No. 411,287. Patented Sept. 17, 1889.

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UNITED STATES PATENT OEEIcE.

FRANK E. KINSMAN, OF NEIV YORK, N. Y.

ELECTRIC-ARC LAM P.

SPECIFICATION forming part of Letters Patent No. 411,287, datedSeptember 17, 1889.

Application filed July 20, 1889. Serial No. 318,132. (No model.)

To all whom it may concern.-

Be it known that I, FRANK E. KINSMAN, a citizen of the United States,and a resident of New York, in the county of New York and State of NewYork, have invented certain new and useful Electric-Arc Lamps, of whichthe following is a specification.

My invention relates to a particular organization of regulating-magnetsand feedcontrolling mechanism in an electricarc lamp.

The object of my invention is to secure effectiveness, simplicity, andcompactness, to which ends my invention consists in the particularorganization hereinafter described in connection with the accompanyingdrawings and specifically claimed.

In the accompanying drawings I have shown in Figure 1, in elevation, anorganization of magnets and feed'controlling mechanism embodyingmyinvention. elevation of the feed-controlling mechanism as connected tothe carbon-carrier.

A indicates a coil or solenoid of coarse wire included in the mainelectric circuit from any suitable source and properly mounted on aframe or support K, as indicated.

B is a movable core for such coil, which core depends from the coil, asshown, so as to be lifted by the action of the currents circulating inthe coil A.

D indicates the usual carbon-holder or rod for an electric-arc lamp,which rod extends axially through the core 15, as indicated, and isengaged by a clutch or other feed-controlling mechanism of any desireddescription. Supported directly by said core is a carbonlifting andfeed-controlling mechanism of any desired character, properly organizedto cause the carbon to be lifted when the core rises and carries suchmechanism with it, and to sustain the parts in normal position while thecarbons are burning, but to permit the carbon to feed when the core isdepressed below the normal position which it holds while the arc is ofnormal length. A type of mechanism of this character is hereinillustrated, and consists simply of a pinion a, mounted in a frame I),carried by the core B, and connected through a ratchet with an escapementwheel 'g, the vibratory retarding-escapement Fig. 2 isaside' ofwhich, also carried by the core, is indicated at 8. An upward extensionfrom such vibratory escapement, or the spindle thereof, is adapted toengage with or be disengaged from a stud on a fixed part of theframework of the lamp. In this organization when the core is lifted theescapement is engaged and prevented from vibrating, so that the carboncannot descend, but when the core is depressed the escapement isreleased and the carbon-rod may then feed downward slowly. Springs 2,connected to extensions from the lower part of the core, serve to assistin sustaining the weight of said core and connected parts.

G indicates a derived-circuit magnet-coil, which is of fine wire, as isusual in the art, and is included in a branch or derived circuit, asshown, between the main connectingposts of the lamp, so as to be inderivation to the arc and main-eircuit coil. The solenoid or coil G ispreferably supported on the under side of the frame or plate K, and hasits core II depending or extending from the lower end ofthe coil, sothat the action of the coil will be to lift the core.

I is a suitably-pivoted link which connects the core H with the core B,so that as the core H is raised by the action of the coil G the core B,with the connected clamp or clutch, will be lowered to cause the clutchto release the carbon-carrier, so that the carbon may be fed downward.

The lamp operates in the following manner: IVhen no current is on thecircuit, the carbons are in contact and the core B is lowered to itsfullest extent. hen the current is turned on, the core B rises, thusseparating the carbons to form the are. As the are lengthens, thederived-circuit coil G increases in power until, finally, it pullsupward on its core to such an extent that the core B is depressed, thuscausing the upper carbon to feed downward.

It will be seen that in this organization the derived-circuit coil,instead of operating upon the core 13 for the main-circuit coil, actsupon a separate core, while at the same time the organization isextremely simple and compact.

I am aware that it is old to employ in an electric-arc lamp amain-circuit coil and a derived-circuit coil for producing a feed of thecarbon; and I am also aware that it has heretofore been proposed to makethe cores of such coils movable and to connect them with the clutch orregulating mechanism. I do not, therefore, claim these devices orconstruction, but limit myself to the special organization as hereindescribed and claimed.

hat I claim as my invention is' The combination, substantially asdescribed, of a main-circuit coil, a depending movable core therefor, acarbon-holder passing axially through such core, a carbon-lifting andfeedcontrolling mechanism sustained by the core press the same for thepurpose of releasing 20 the feed mechanism When the derived-circuitmagnet-core is raised by its coil.

Signed at New York city, in the county of New York and State of NewYork, this 13th day of July, A. D, 1889.

a FRANK E. KINSMAN.

Witnesses WM. I-I. CAPEL, HUGO K OELKER.

